- 增加 ISelect.ToSql 字段别名设置，默认为 AsIndex，可改为 AsProperty；#158

FreeSql.DbContext/FreeSql.DbContext.xml

@@ -110,6 +110,13 @@
             清空状态数据
             </summary>
         </member>
+        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
+            <summary>
+            根据 lambda 条件删除数据
+            </summary>
+            <param name="predicate"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加

FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/Curd/MySqlSelectTest.cs

@@ -995,6 +995,24 @@ WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title`
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/Curd/DamengSelectTest.cs

@@ -922,6 +922,24 @@ WHERE (((to_char(a.""ID"")) in (SELECT b.""TITLE""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TiOtmModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcSelectTest.cs

@@ -887,6 +887,24 @@ WHERE (((cast(a.[Id] as nvarchar)) in (SELECT b.[Title]
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlSelectTest.cs

@@ -1006,6 +1006,24 @@ WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title`
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/Curd/OracleSelectTest.cs

@@ -922,6 +922,24 @@ WHERE (((to_char(a.""ID"")) in (SELECT b.""TITLE""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TiOtmModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLSelectTest.cs

@@ -978,6 +978,24 @@ WHERE ((((a.""id"")::varchar) in (SELECT b.""title""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/Curd/SqlServerSelectTest.cs

@@ -868,6 +868,24 @@ WHERE (((cast(a.[Id] as nvarchar)) in (SELECT b.[Title]
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs

@@ -1037,6 +1037,24 @@ WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title`
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests/Oracle/Curd/OracleSelectTest.cs

@@ -922,6 +922,24 @@ WHERE (((to_char(a.""ID"")) in (SELECT b.""TITLE""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TiOtmModel1

FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLSelectTest.cs

@@ -995,6 +995,24 @@ WHERE ((((a.""id"")::varchar) in (SELECT b.""title""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerSelectTest.cs

@@ -913,6 +913,24 @@ WHERE (((cast(a.[Id] as nvarchar)) in (SELECT b.[Title]
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests/Sqlite/Curd/SqliteSelectTest.cs

@@ -906,6 +906,24 @@ WHERE (((cast(a.""Id"" as character)) in (SELECT b.""Title""
             select.AsTable((_, old) => old).AsTable((_, old) => old).Min(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Sum(a => a.Id);
             select.AsTable((_, old) => old).AsTable((_, old) => old).Avg(a => a.Id);
+
+            var sqlsss = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_1" : null)
+                .AsTable((type, old) => type == typeof(Topic) ? $"{old}_2" : null)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }, FieldAliasOptions.AsProperty);
+
+            var slsld3 = select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToList(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                });
         }
 
         public class TestInclude_OneToManyModel1

FreeSql/FreeSql.xml

@@ -894,6 +894,17 @@
             </summary>
             <returns></returns>
         </member>
+        <member name="F:FreeSql.FieldAliasOptions.AsIndex">
+            <summary>
+            自动产生 as1, as2, as3 .... 字段别名<para></para>
+            这种方法可以最大程度防止多表，存在相同字段的问题
+            </summary>
+        </member>
+        <member name="F:FreeSql.FieldAliasOptions.AsProperty">
+            <summary>
+            使用属性名作为字段别名
+            </summary>
+        </member>
         <member name="M:FreeSql.ILinqToSql`1.Select``1(System.Linq.Expressions.Expression{System.Func{`0,``0}})">
             <summary>
             【linq to sql】专用方法，不建议直接使用
@@ -1316,12 +1327,13 @@
             <typeparam name="TDto"></typeparam>
             <returns></returns>
         </member>
-        <member name="M:FreeSql.ISelect`1.ToSql``1(System.Linq.Expressions.Expression{System.Func{`0,``0}})">
+        <member name="M:FreeSql.ISelect`1.ToSql``1(System.Linq.Expressions.Expression{System.Func{`0,``0}},FreeSql.FieldAliasOptions)">
             <summary>
             返回即将执行的SQL语句
             </summary>
             <typeparam name="TReturn">返回类型</typeparam>
             <param name="select">选择列</param>
+            <param name="fieldAlias">字段别名</param>
             <returns></returns>
         </member>
         <member name="M:FreeSql.ISelect`1.ToAggregate``1(System.Linq.Expressions.Expression{System.Func{FreeSql.ISelectGroupingAggregate{`0},``0}})">

FreeSql/Interface/Curd/ISelect/FieldAliasOptions.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql
+{
+    public enum FieldAliasOptions
+    {
+        /// <summary>
+        /// 自动产生 as1, as2, as3 .... 字段别名<para></para>
+        /// 这种方法可以最大程度防止多表，存在相同字段的问题
+        /// </summary>
+        AsIndex,
+
+        
+        /// <summary>
+        /// 使用属性名作为字段别名
+        /// </summary>
+        AsProperty
+    }
+}

FreeSql/Interface/Curd/ISelect/ISelect1.cs

@@ -89,8 +89,9 @@ namespace FreeSql
         /// </summary>
         /// <typeparam name="TReturn">返回类型</typeparam>
         /// <param name="select">选择列</param>
+        /// <param name="fieldAlias">字段别名</param>
         /// <returns></returns>
-        string ToSql<TReturn>(Expression<Func<T1, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
 
         /// <summary>
         /// 执行SQL查询，返回指定字段的聚合结果

FreeSql/Interface/Curd/ISelect/ISelect10.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, ISelectGroupingAggregate<T6>, ISelectGroupingAggregate<T7>, ISelectGroupingAggregate<T8>, ISelectGroupingAggregate<T9>, ISelectGroupingAggregate<T10>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect2.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect3.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect4.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect5.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect6.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, ISelectGroupingAggregate<T6>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect7.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, ISelectGroupingAggregate<T6>, ISelectGroupingAggregate<T7>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect8.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, ISelectGroupingAggregate<T6>, ISelectGroupingAggregate<T7>, ISelectGroupingAggregate<T8>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column);

FreeSql/Interface/Curd/ISelect/ISelect9.cs

@@ -28,7 +28,7 @@ namespace FreeSql
         DataTable ToDataTable<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select);
         List<TReturn> ToList<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select);
         List<TDto> ToList<TDto>();
-        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select);
+        string ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex);
         TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, ISelectGroupingAggregate<T2>, ISelectGroupingAggregate<T3>, ISelectGroupingAggregate<T4>, ISelectGroupingAggregate<T5>, ISelectGroupingAggregate<T6>, ISelectGroupingAggregate<T7>, ISelectGroupingAggregate<T8>, ISelectGroupingAggregate<T9>, TReturn>> select);
         decimal Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column);
         TMember Min<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column);

FreeSql/Internal/CommonExpression.cs

@@ -25,6 +25,7 @@ namespace FreeSql.Internal
             _common = common;
         }
 
+        internal const int ReadAnonymousFieldAsCsName = -53129;
         public bool ReadAnonymousField(List<SelectTableInfo> _tables, StringBuilder field, ReadAnonymousTypeInfo parent, ref int index, Expression exp, Func<Expression[], string> getSelectGroupingMapString, List<LambdaExpression> whereCascadeExpression, bool isAllDtoMap)
         {
             Func<ExpTSC> getTSC = () => new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = SelectTableInfoType.From, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where, whereCascadeExpression = whereCascadeExpression };
@@ -37,6 +38,7 @@ namespace FreeSql.Internal
                     parent.DbField = $"-({ExpressionLambdaToSql(exp, getTSC())})";
                     field.Append(", ").Append(parent.DbField);
                     if (index >= 0) field.Append(" as").Append(++index);
+                    else if (index == ReadAnonymousFieldAsCsName && string.IsNullOrEmpty(parent.CsName) == false) field.Append(" ").Append(parent.CsName);
                     return false;
                 case ExpressionType.Convert: return ReadAnonymousField(_tables, field, parent, ref index, (exp as UnaryExpression)?.Operand, getSelectGroupingMapString, whereCascadeExpression, isAllDtoMap);
                 case ExpressionType.Constant:
@@ -54,6 +56,7 @@ namespace FreeSql.Internal
                         parent.DbField = _common.FormatSql("{0}", constExp?.Value);
                     field.Append(", ").Append(parent.DbField);
                     if (index >= 0) field.Append(" as").Append(++index);
+                    else if (index == ReadAnonymousFieldAsCsName && string.IsNullOrEmpty(parent.CsName) == false) field.Append(" ").Append(parent.CsName);
                     return false;
                 case ExpressionType.Call:
                     var callExp = exp as MethodCallExpression;
@@ -70,6 +73,7 @@ namespace FreeSql.Internal
                         parent.DbField = ExpressionLambdaToSql(exp, getTSC());
                     field.Append(", ").Append(parent.DbField);
                     if (index >= 0) field.Append(" as").Append(++index);
+                    else if (index == ReadAnonymousFieldAsCsName && string.IsNullOrEmpty(parent.CsName) == false) field.Append(" ").Append(parent.CsName);
                     return false;
                 case ExpressionType.Parameter:
                 case ExpressionType.MemberAccess:
@@ -102,6 +106,7 @@ namespace FreeSql.Internal
                         parent.DbField = ExpressionLambdaToSql(exp, getTSC());
                         field.Append(", ").Append(parent.DbField);
                         if (index >= 0) field.Append(" as").Append(++index);
+                        else if (index == ReadAnonymousFieldAsCsName && string.IsNullOrEmpty(parent.CsName) == false) field.Append(" ").Append(parent.CsName);
                         parent.MapType = SearchColumnByField(_tables, null, parent.DbField)?.Attribute.MapType ?? exp.Type;
                         return false;
                     }
@@ -219,6 +224,7 @@ namespace FreeSql.Internal
             parent.DbField = $"({ExpressionLambdaToSql(exp, getTSC())})";
             field.Append(", ").Append(parent.DbField);
             if (index >= 0) field.Append(" as").Append(++index);
+            else if (index == ReadAnonymousFieldAsCsName && string.IsNullOrEmpty(parent.CsName) == false) field.Append(" ").Append(parent.CsName);
             return false;
         }
         public object ReadAnonymous(ReadAnonymousTypeInfo parent, DbDataReader dr, ref int index, bool notRead, ReadAnonymousDbValueRef dbValue)

FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs

@@ -525,11 +525,11 @@ namespace FreeSql.Internal.CommonProvider
             return ToListMrPrivate<TReturn>(sql, af, otherData);
         }
         protected List<TReturn> ToListMapReader<TReturn>((ReadAnonymousTypeInfo map, string field) af) => ToListMapReaderPrivate<TReturn>(af, null);
-        protected (ReadAnonymousTypeInfo map, string field) GetExpressionField(Expression newexp)
+        protected (ReadAnonymousTypeInfo map, string field) GetExpressionField(Expression newexp, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
             var map = new ReadAnonymousTypeInfo();
             var field = new StringBuilder();
-            var index = 0;
+            var index = fieldAlias == FieldAliasOptions.AsProperty ? CommonExpression.ReadAnonymousFieldAsCsName : 0;
 
             _commonExpression.ReadAnonymousField(_tables, field, map, ref index, newexp, null, _whereCascadeExpression, true);
             return (map, field.Length > 0 ? field.Remove(0, 2).ToString() : null);
@@ -1059,9 +1059,9 @@ namespace FreeSql.Internal.CommonProvider
         protected TSelect InternalOrderByDescending(Expression column) => this.OrderBy($"{_commonExpression.ExpressionSelectColumn_MemberAccess(_tables, null, SelectTableInfoType.From, column, true, null)} DESC");
 
         protected List<TReturn> InternalToList<TReturn>(Expression select) => this.ToListMapReader<TReturn>(this.GetExpressionField(select));
-        protected string InternalToSql<TReturn>(Expression select)
+        protected string InternalToSql<TReturn>(Expression select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            var af = this.GetExpressionField(select);
+            var af = this.GetExpressionField(select, fieldAlias);
             return this.ToSql(af.field);
         }
 

FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs

@@ -121,11 +121,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select1Provider.cs

@@ -263,11 +263,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        public string ToSql<TReturn>(Expression<Func<T1, TReturn>> select)
+        public string ToSql<TReturn>(Expression<Func<T1, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             _tables[0].Parameter = select.Parameters[0];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         public TReturn ToAggregate<TReturn>(Expression<Func<ISelectGroupingAggregate<T1>, TReturn>> select)

FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs

@@ -98,11 +98,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2>.ToSql<TReturn>(Expression<Func<T1, T2, TReturn>> select)
+        string ISelect<T1, T2>.ToSql<TReturn>(Expression<Func<T1, T2, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2> ISelect<T1, T2>.LeftJoin(Expression<Func<T1, T2, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs

@@ -101,11 +101,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3>.ToSql<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select)
+        string ISelect<T1, T2, T3>.ToSql<TReturn>(Expression<Func<T1, T2, T3, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3> ISelect<T1, T2, T3>.LeftJoin(Expression<Func<T1, T2, T3, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs

@@ -104,11 +104,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select)
+        string ISelect<T1, T2, T3, T4>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4> ISelect<T1, T2, T3, T4>.LeftJoin(Expression<Func<T1, T2, T3, T4, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs

@@ -107,11 +107,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4, T5>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5> ISelect<T1, T2, T3, T4, T5>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs

@@ -110,11 +110,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4, T5, T6>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5, T6>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5, T6> ISelect<T1, T2, T3, T4, T5, T6>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, T6, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs

@@ -113,11 +113,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4, T5, T6, T7>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5, T6, T7>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5, T6, T7> ISelect<T1, T2, T3, T4, T5, T6, T7>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, T6, T7, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs

@@ -117,11 +117,11 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalToDataTable(select?.Body);
         }
 
-        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8> ISelect<T1, T2, T3, T4, T5, T6, T7, T8>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, bool>> exp)

FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs

@@ -117,11 +117,11 @@ namespace FreeSql.Internal.CommonProvider
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
             return this.InternalToDataTable(select?.Body);
         }
-        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select)
+        string ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.ToSql<TReturn>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
-            if (select == null) return this.InternalToSql<TReturn>(select?.Body);
+            if (select == null) return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
             for (var a = 0; a < select.Parameters.Count; a++) _tables[a].Parameter = select.Parameters[a];
-            return this.InternalToSql<TReturn>(select?.Body);
+            return this.InternalToSql<TReturn>(select?.Body, fieldAlias);
         }
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.LeftJoin(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, bool>> exp)